Stripper for wire cable covering



Dec. 29, 1964 R. c. STABS STRIPPER FOR WIRE CABLE COVERING Filed April 30, 1963 26 FIG. 6 3

INVENTOR R/CHA R0 6. STA B5 ATTORNEYS United States Patent 3,162,945 STRIPPER FGR WIRE CABLE CGVERING Richard C. Stabs, 4421 Norton Road, Duluth, Minn. Filed Apr. 34 1963, Ser. No. 276,863 1 Claim. (Cl. 3091) The invention relates to an improvement in a stripper for cutting the covering of a wire cable.

it is an object of the invention to provide a stripper having a cutting edge disposed in a manner to assure positive cutting at all times as the cable covering is stripped. It is a further object to provide a stripper having a cutting blade with a horizontal dimension whereby the blade has great rigidity for stripping heavy cable covering.

, It is also an object to provide a stripper which has a shoe formed on the lower edge of the cutting blade whereby the wires within the cable covering are not damaged as the stripping of the covering is accomplished. It is a still further object to provide the blade shoe with a formation which aids in the insertion of the same into an initial starting out made in the cable covering.

An additionfl object is to provide an auxiliary cutting edge on the blade member having an arcuate edge which allows easy and positive cutting of the initial cut made in the covering into which the blade is slipped for the stripping operation.

It will not be here attempted to set forth and indicate all of the various objects and advantages incident to the invention, but other objects and advantages will be referred to in or else will become apparent from that which follows.

In the drawings forming part of this application:

FIGURE 1 is a perspective view of a portion of the stripper with the auxiliary cutting edge shown as cutting into the cable covering to form the initial or starting cut.

FIGURE 2 is a perspective of the stripper with cutting blade in position in the starting out in the covering and ready for stripping.

FIGURE 3 is a slightly enlarged fragmentary view of the front end of the stripper.

FIGURE 4 is a front end view of the stripper.

FIGURE 5 is a rear end view thereof.-

FIGURE 6 is an enlarged bottom plan view of a portion of the front end of the stripper on the line 66 of FIGURE 3.

Referring to the drawings in detail, the stripper tool A includes the handle 10 formed of the base bar 11 which terminates at one end in the eight 12 which in turn termimates in the upper bar portion 14 overlying and in spaced parallel relation to the base bar 10. The upper bar portion 14- terminates in the forwardly and downwardly converging end bar portion 16 secured at the lower end thereof to the base bar 10. The base bar 10 terminates at its forward end beyond the juncture with the end bar portion in the tip portion 18.

The tip portion 18 of the stripper is formed with a longitudinally extending slot 20 in which the blade 22 is secured in longitudinal alignment with the handle 10.

The blade 22 is formed from a piece of relatively thin -flat stock and includes the outer arcuate cutting blade portion 24 which terminates in the converging front and rear side edges 26 and 28, respectively. The blade is so positioned on the tip that the edge 28 is angularly disposed at something less than a right angle to the longitudinal axis of the base bar 11.

The arcuate cutting blade portion 24 is used to make the intial slit in the cable covering and due to its arcuate edge, entry of the same into and beneath the cable covering does not damage the wires or conductors within the covering as is true in present day cutting devices with pointed ends.

At the area of conversion of the edges 26 and 28 is positioned the shoe fall which is elongate and somewhat streamlined in shape and includes the transversely arcuate top surface formation 32 and the transversely arcuate bottom surface formation 34. The outline of the shoe looking atthe same from the top is somewhat elliptical with the longitudinally arcuate side edge surfaces 36 and 38 and likewise the outline looking at the same from the side with the longitudinally top and bottom edges 40 and 42. The shoe 22 is so positioned on the blade 22 that the longitudinal axis thereof is parallel to the longitudinal axis of the blade and also the base bar 11 with the shoe 22 spaced from the base bar. That portion of the blade edge 28 extending at an-angle from the lower edge of the base bar 11 to the shoe 39 is sharpened as at 44 to thereby form an angularly disposed cutting edge. Further the edge 28 of the blade enters the shoe 22 at a point midway of the longitudinal length thereof to produce maximum securement of the shoe to the blade and at the same time maximum efiiciency of the shoe relative to the cutting edge 44-. The edge 26 is non-cutting.

It will be noted that with the formation of the blade as set out above and its position in the tip portion 18, the longitudinal extent of the blade from point x to the cutting portion 44 is considerable thereby giving the blade considerable longitudinal rigidity as a result.. Also, the dis tance between the shoe 3i and the underside of the base bar portion determines the depth of insertion of the shoe into the cable and beneath the covering.

The device A is used in the following manner: A small slit B is made in the covering 46 of the cable C such as illustrated in FIGURE 1. This slit B allows insertion of the shoe 30 beneath the covering 46 of the cable as illustrated in FIGURE 2. The tool A may then be drawn in the direction of the arrow and the cable covering 46 cut on the broken line 48 down to the end of the covering. An annular cut 50 is made in the covering at the upper end of the cut 48, and as a result the covering may be removed from the cut 50. The formation and positioning of the shoe 30 on the blade 22 prevents damage to the wires or conductors within the covering :6. Also, it will be seen that the angular disposition of the cutting edge 44 provides a cutting-shearing action as the blade is pulled through the covering 46. Further, it will be seen that the user can insert his fingers between the base 11 and the upper bar portion 14 and grip the bar portion 14, and if the resistance met in cutting becomes great the edge of the users hand may be butted and pressed against the bight end 12 to aid in increasing the pulling force of the blade through the covering 46.

The invention is not to be understood as restricted to the details set forth since these may be modified within the scope of the appended claim without departing from the spirit and scope of the invention.

Having thus described the invention, what is claimed as new and desired to be secured by Letters Patent is:

In a device for stripping the covering of a wire cable the combination of, a handle having a base portion,-a thin flat cutting blade, said cutting blade having an armate cutting edge formed on the forward end thereof, said arcuate cutting edge terminating in converging front and 1, V a w a a 4 rear'side edges, said rear edge having a sharpened pertion, References Cied by the Examiner a shee memher secured to said blade 21? the point of con- UNITED STATES PATENTS VCISIOII of said side edges, sald blade being secured to said 25 V handle base portion with said rear side sharpened portien 8 f diverging rearwardiy of the base portion from'the point 5 of securement therewith at less 'than ninety degrees theret0, the longitudinal axis ofsaid shoe being parailei' to the longitudinal axis of said base portion with the shoe FOREIGN PATENTS spaced from said base portion whereby said sharpened 1,118,293 11/61 Germany. 7

rear edge ortion of said blade can bedrawn against the 19 WILLIAM FELDMAN Primary Emmi-net cover ng 0L a cable to cut the same with said shoe positioned beneath the covering. JOSEPH E Examine"- 

